GLENNS FERRY, Idaho -- Four people were killed after a head-crash on Interstate 84 Thursday night.
The crash occurred shortly before 9:00 p.m. Thursday on eastbound I-84 near milepost 120.
Police say Eusebio Jacobo Pineda, 45, of Wendell, was driving a 2001 Ford F-150 pick-up and was traveling eastbound in the westbound lanes into oncoming traffic.
Amado Herrera, 48 of South El Monte, Calif., was driving a 2010 Mazda 4-door and was traveling in the fast lane westbound at milepost 120.
Pineda collided head-on with Herrera and three family members.
Amado Herrera and his three passengers, who police say were in Idaho visiting family, died instantly upon impact.
Herrera's passengers were Luz Herrera, Ivett Herrera, 18, and Antoni Herrera, 9, of South El Monte, Ca.
Pineda's vehicle rolled after impact with Herrera's vehicle.
Jacobo Pineda was transported by air ambulance to St. Alphonsus Regional Medical Center in Boise with non life-threatening injuries.
Pineda has been charged with four counts of felony Vehicular Manslaughter and will be arrested as soon as he is medically cleared.
Investigators say alcohol was a contributing factor in the crash -- but Pineda's blood alcohol content is pending final analysis.
Police say another driver on the road Thursday night called to report that Pineda was driving suspiciously on I-84 -- although at that time, he was driving the right way on the road.
Because of that phone call, police believe Pineda, for some reason, turned around on the interstate and began driving against traffic. They aren't sure at this point how long he had been driving the wrong way before he hit the family of four.
Herrera and his passengers were wearing their seatbelts at the time of the crash. It is unknown at this time whether Jacobo Pineda was wearing a seatbelt.
The westbound lanes were blocked for approximately four hours and traffic was diverted.
The crash is still under investigation.